micro-zk-proofs/pedersen.d.ts

Create & verify zero-knowledge SNARK proofs in parallel, using noble cryptography

/**
 * Pedersen Hash over babyjubjub elliptic curve, defined in
 * {@link https://eips.ethereum.org/EIPS/eip-2494 | EIP-2494}.
 * jubjub     - edwards over bls12-381 scalar
 * babyjubjub - edwards over bn254 scalar
 * Using scalar as field allows to be used inside of zk-circuits.
 * @module
 */
import { type EdwardsPoint as ExtPointType } from '@noble/curves/abstract/edwards.js';
import type { TArg, TRet } from '@noble/hashes/utils.js';
type PointCodec = {
    encode: (p: any) => Uint8Array;
    decode: (bytes: Uint8Array) => ExtPointType;
};
/**
 * Pedersen point encoder/decoder for babyjubjub points.
 * @example
 * Encode a babyjubjub point to bytes and decode it back.
 * ```ts
 * const { babyjubjub } = await import('@noble/curves/misc.js');
 * const point = babyjubjub.Point.BASE;
 * const encoded = Point.encode(point);
 * Point.decode(encoded);
 * ```
 */
export declare const Point: TRet<PointCodec>;
/**
 * Computes the Pedersen hash for the input bytes.
 * @param msg - Message bytes to hash.
 * @returns Encoded babyjubjub point bytes.
 * @example
 * Hash message bytes into an encoded babyjubjub point.
 * ```ts
 * const digest = pedersenHash(new Uint8Array([1, 2, 3]));
 * ```
 */
export declare function pedersenHash(msg: TArg<Uint8Array>): TRet<Uint8Array>;
export {};
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